Open AccessGlobal textures and the formation of self‐bound gravitational systems
Author(s) -
Ribeiro A. L. B.,
Letelier P. S.
Publication year - 1999
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.1999.02850.x
Subject(s) - physics , gravitational collapse , radius , galaxy , circular symmetry , gravitation , astrophysics , gravitational field , texture (cosmology) , scale (ratio) , classical mechanics , quantum mechanics , computer security , artificial intelligence , computer science , image (mathematics)
Using a Newtonian approximation we developed a quantitative criterion for the collapse of a spherical distribution of matter under an isolated texture field. In particular, we found the evolution of an overdense region is strongly determined by two parameters: the energy scale of symmetry breaking ( η ) and the initial radius of the system. Applying our collapse criterion to typical galaxy scales we verified the formation of 10 11 ‐M ⊙ objects at z ≲9 and 10 12 ‐M ⊙ objects at z ≲5.